Wireless Transceiver for Transmitting Circularly-Polarized Signals with Modulated Angular Speed

ABSTRACT

A radio frequency (RF) front end chip in a phased array antenna panel for transmitting a modulated circularly-polarized signal is disclosed. The RF front end chip includes an oscillator providing an angular speed modulation signal to a quadrature generation block, the quadrature generation block providing an in-phase signal and a quadrature signal based on the angular speed modulation signal, a first amplifier receiving the in-phase signal and a data signal, and providing a modulated horizontally-polarized signal, and a second amplifier receiving the quadrature signal and the data signal, and providing a modulated vertically-polarized signal, where a modulated circularly-polarized signal is generated based on the modulated horizontally-polarized signal and the modulated vertically-polarized signal. The angular speed modulation signal controls an angular speed of the modulated circularly-polarized signal. The data signal is encoded by the angular speed modulation signal.

BACKGROUND

Wireless communications systems, such as satellite communicationssystems, can transmit data using circularly polarized signals. In aconventional wireless transmitter, a horizontally-polarized signal and avertically polarized signal may be combined to form acircularly-polarized signal before being transmitted by the wirelesstransmitter. In the conventional wireless transmitter, ahorizontally-polarized signal and a vertically-polarized signal areprovided directly from a processing unit to a radio frequency (RF) frontend chip where the amplitude and phase of the horizontally-polarizedsignal and the vertically polarized signal may be adjusted before beingconverted to the circularly-polarized signal for transmission. Thus, thecircularly-polarized signal formed in the conventional wirelesstransmitter has a fixed angular speed. However, modulating the angularspeed of a circularly-polarized signal may add additional information tothe signal to be transmitted by the wireless transceiver.

Thus, there is a need in the art for a wireless transceiver that cantransmit circularly-polarized signals with modulated angular speed.

SUMMARY

The present disclosure is directed to a wireless transceiver having aphased array antenna panel for transmitting circularly-polarized signalswith modulated angular speed, substantially as shown in and/or describedin connection with at least one of the figures, and as set forth in theclaims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A illustrates a perspective view of a portion of an exemplarywireless transceiver using a phased array antenna panel for transmittingand/or receiving wireless signals according to one implementation of thepresent application.

FIG. 1B illustrates a top plan view of a portion of an exemplarywireless transceiver using a phased array antenna panel for transmittingand/or receiving wireless signals according to one implementation of thepresent application.

FIG. 2 illustrates a functional block diagram of a portion of anexemplary wireless transceiver according to one implementation of thepresent application.

FIG. 3 illustrates a functional circuit diagram of a portion of anexemplary wireless transceiver according to one implementation of thepresent application.

FIG. 4 illustrates a functional circuit diagram of a portion of anexemplary wireless transceiver according to one implementation of thepresent application.

DETAILED DESCRIPTION

The following description contains specific information pertaining toimplementations in the present disclosure. The drawings in the presentapplication and their accompanying detailed description are directed tomerely exemplary implementations. Unless noted otherwise, like orcorresponding elements among the figures may be indicated by like orcorresponding reference numerals. Moreover, the drawings andillustrations in the present application are generally not to scale, andare not intended to correspond to actual relative dimensions.

FIG. 1A illustrates a perspective view of a portion of an exemplarywireless transceiver using a phased array antenna panel for transmittingand/or receiving wireless signals according to one implementation of thepresent application. As illustrated in FIG. 1A, wireless transceiver 100includes substrate 102 having layers 102 a, 102 b and 102 c, phasedarray antenna panel 104 having a plurality of front end units such asfront end units 105 a, 105 b and 105 x (hereinafter collectivelyreferred to as “front end units 105”), and master chip 180.

In the present implementation, substrate 102 may be a multi-layerprinted circuit board (PCB) having layers 102 a, 102 b and 102 c andadditional layers below layer 102 c that are not explicitly shown.Although only three layers are shown in FIG. 1A, in anotherimplementation, substrate 102 may be a multi-layer PCB having more orless than three layers. Phased array antenna panel 104 having front endunits 105 is formed in layer 102 a of substrate 102. In oneimplementation, substrate 102 of wireless transceiver 100 may include500 front end units 105, each having a radio frequency (RF) front endchip coupled to a plurality of antennas (not explicitly shown in FIG.1A). In one implementation, wireless transceiver 100 may include 2000antennas on phased array antenna panel 104, where each front end unit105 includes four antennas coupled to an RF front end chip (notexplicitly shown in FIG. 1A).

In the present implementation, master chip 180 may be formed in layer102 c of substrate 102 (which is just below routing layer 102 b andantenna panel layer 102 a). Master chip 180 may be coupled to front endunits 105 in layer 102 a using a plurality of buses (not explicitlyshown in FIG. 1A) routed through layers 102 a and 102 b of substrate102, for example. In the present implementation, master chip 180 isconfigured to provide phase and amplitude control information as well asencoded data information from a digital core in master chip 180 to theRF front end chips in each of front end units 105. For example, masterchip 180 may drive in parallel a number of N-bit buses where each N-bitbus is coupled to a respective segment of the front end units.

FIG. 1B illustrates a top plan view of a portion of an exemplarywireless transceiver using a phased array antenna panel for transmittingand/or receiving wireless signals according to one implementation of thepresent application. As illustrated in FIG. 1B, phased array antennapanel 104 is formed in layer 102 a of a multi-layer substrate, such assubstrate 102 in FIG. 1A. Phased array antenna panel 104 includes aplurality of front end units, such as front end units 105 a, 105 b and105 x (hereinafter collectively referred to as “front end units 105”).In one implementation, layer 102 a, phased array antenna panel 104,front end units 105, and master chip 180 in FIG. 1B may substantiallycorrespond to layer 102 a, phased array antenna panel 104, front endunits 105, and master chip 180, respectively, of wireless transceiver100 in FIG. 1A.

As illustrated in FIG. 1B, each of front end units 105 includes an RFfront end chip coupled to a group of four antennas. For example, infront end unit 105 a, RF front end chip 106 a is surrounded by a groupof four antennas, namely, antennas 114 a, 114 b, 114 c and 114 d. In oneimplementation, RF front end unit 105 a having RF front end chip 106 aand antennas 114 a, 114 b, 114 c and 114 d in FIG. 1B may substantiallycorrespond to RF front end unit 105 a in FIG. 1A. Antennas 114 a, 114 b,114 c and 114 d are coupled to RF front end chip 106 a through antennafeed lines. As can be seen in FIG. 1B, each of front end units 105 ofphased array antenna panel 104, such as front end units 105 b and 105 x,includes an RF front end chip coupled to a group of four antennas.

As illustrated in FIG. 1B, master chip 180 may be formed in a layer of asubstrate that is different than layer 102 a. In one implementation,master chip 180 in FIG. 1B may substantially correspond to master chip180 in FIG. 1A, which is formed in layer 102 c of substrate 102, andcoupled to front end units 105 in layer 102 a using a plurality of buses(not explicitly shown in FIG. 1B) routed through layers 102 a and 102 bof substrate 102, for example. In the present implementation, masterchip 180 is configured to provide phase and amplitude controlinformation as well as encoded data information from a digital core inmaster chip 180 to the RF front end chips in each of front end units105. For example, master chip 180 may drive in parallel a number ofN-bit buses where each N-bit bus is coupled to a respective segment ofthe front end units.

FIG. 2 illustrates a functional block diagram of a portion of anexemplary wireless transceiver according to one implementation of thepresent application. As illustrated in FIG. 2, wireless transceiver 200includes front end units 205 a, 205 b through 205 x, (hereinaftercollectively referred to as front end units 205) and master chip 280.Each of front end units 205 may include an RF front end chip coupled toa plurality of antennas.

As illustrated in FIG. 2, RF front end chip 206 a in front end unit 205a is coupled to master chip 280 through N-bit bus 210 a for receivingphase and amplitude control information as well as encoded datainformation. RF front end chip 206 a is electrically coupled to antennas214 a, 214 b, 214 c and 214 d in front end unit 205 a, where RF frontend chip 206 a provides a modulated horizontally-polarized signal and amodulated vertically-polarized signal to each of antennas 214 a, 214 b,214 c and 214 d, for example. Similarly, RF front end chip 206 b infront end unit 205 b is coupled to master chip 280 through N-bit bus 210b for receiving phase and amplitude control information as well asencoded data information. RF front end chip 206 b is electricallycoupled to antennas 214 e, 214 f, 214 g and 214 h in front end unit 205b, where RF front end chip 206 b provides a modulatedhorizontally-polarized signal and a modulated vertically-polarizedsignal to each of antennas 214 e, 214 f, 214 g and 214 h, for example.In addition, RF front end chip 206 x in front end unit 205 x is coupledto master chip 280 through N-bit bus 210 x for receiving phase andamplitude control information as well as encoded data information. RFfront end chip 206 x is electrically coupled to antennas 214 w, 214 x,214 y and 214 z in front end unit 205 x, where RF front end chip 206 xprovides a modulated horizontally-polarized signal and a modulatedvertically-polarized signal to each of antennas 214 w, 214 x, 214 y and214 z, for example.

FIG. 3 illustrates a functional circuit diagram of a portion of anexemplary wireless transceiver according to one implementation of thepresent application. As shown in FIG. 3, front end unit 305 a includes aplurality of antennas, such as antennas 314 a and 314 d, coupled to RFfront end chip 306 a. In one implementation, front end unit 305 a maysubstantially correspond to front end unit 105 a in FIG. 1B. In oneimplementation, front end unit 305 a may substantially correspond tofront end unit 205 a in FIG. 2. It is noted that, in FIG. 3, someantennas, which would otherwise correspond to antennas 214 b and 214 cin FIG. 2 for example, are omitted for conceptual clarity.

As shown in FIG. 3, front end unit 305 a receives data signals, havingphase and amplitude control information as well as encoded datainformation, from N-bit bus 310 a from a master chip, such as masterchip 280 in FIG. 2. The data signals are provided to one or moretransmit circuits in RF front end chip 306 a, which provides a modulatedhorizontally-polarized signal and a modulated vertically-polarizedsignal to each of the antennas coupled thereto. The antennas, such asantennas 314 a and 314 d may be configured to transmit signals to one ormore wireless receivers, such as commercial geostationary communicationsatellites or low earth orbit satellites having a very large bandwidthin the 10 GHz to 20 GHz frequency range and a very high data rate. Inanother implementation, antennas 314 a and 314 d may be configured totransmit signals in the 60 GHz frequency range, sometimes referred to as“60 GHz communications,” which involve transmission and reception ofmillimeter wave signals. Among the applications for 60 GHzcommunications are wireless personal area networks, wirelesshigh-definition television signal and Point-to-Point links. Also, RFfront end chip 306 a may also include receive circuits for receivingsignals from one or more antennas. The receive circuits are omitted fromRF front end chip 306 a for conceptual clarity.

As illustrated in FIG. 3, N-bit bus 310 a carrying data signals havingphase information, amplitude information and encoded data informationfrom a master chip, is provided to transmit circuit 320 a in RF frontend chip 306 a. Transmit circuit 320 a includes phase shifters 324 aHand 324 aV, amplifiers 322 aH and 322 aV, oscillator 340 a andquadrature generation block 344 a. For example, data signal 330 aHhaving phase information, amplitude information and encoded datainformation is provided to phase shifter 324 aH, where data signal 330aH may be phase shifted by phase shifter 324 aH to form phase shifteddata signal 332 aH. Phase shifted data signal 332 aH from phase shifter324 aH is provided to amplifier 322 aH. In addition, oscillator 340 aprovides angular speed modulation signal 342 a to quadrature generationblock 344 a, which provides in-phase signal 346 aH and quadrature signal346 aV based on angular speed modulation signal 342 a to amplifiers 322aH and 322 aV, respectively. Amplifier 322 aH combines phase shifteddata signal 332 aH from phase shifter 324 aH and in-phase signal 346 aHfrom quadrature generation block 344 a, and provides modulatedhorizontally-polarized signal 348 aH to antenna 314 a. In addition, datasignal 330 aV having phase information, amplitude information andencoded data information is provided to phase shifter 324 aV, where datasignal 330 aV may be phase shifted by phase shifter 324 aV to form phaseshifted data signal 332 aV. Phase shifted data signal 332 aV from phaseshifter 324 aV is provided to amplifier 322 aV. Amplifier 322 aVcombines phase shifted data signal 332 aV from phase shifter 324 aV andquadrature signal 346 aV from quadrature generation block 344 a, andprovides modulated vertically-polarized signal 348 aV to antenna 314 a.In one implementation, antenna 314 a may combine modulatedhorizontally-polarized signal 348 aH and modulated vertically-polarizedsignal 348 aV, and generate a modulated circularly-polarized signal fortransmission, where angular speed modulation signal 342 a controls anangular speed of the modulated circularly-polarized signal. In oneimplementation, data signals 330 aH and 330 aV may carry the same datafrom the master chip; while in another implementation data carried bydata signal 330 aH can be different from data carried by data signals330 aV.

As further illustrated in FIG. 3, N-hit bus 310 a carrying data signals,having phase information, amplitude information and data informationfrom the master chip, is provided to transmit circuit 320 d in RF frontend chip 306 a. Transmit circuit 320 d includes phase shifters 324 dHand 324 dV, amplifiers 322 dH and 322 dV, oscillator 340 d andquadrature generation block 344 d. For example, data signal 334 dHhaving phase information, amplitude information and encoded datainformation is provided to phase shifter 324 dH, where data signal 334dH may be phase shifted by phase shifter 324 dH to form phase shifteddata signal 336 dH. Phase shifted data signal 336 dH from phase shifter324 dH is provided to amplifier 322 dH. In addition, oscillator 340 dprovides angular speed modulation signal 342 d to quadrature generationblock 344 d, which provides in-phase signal 346 dH and quadrature signal346 dV based on angular speed modulation signal 342 d to amplifiers 322dH and 322 dV, respectively. Amplifier 322 dH combines phase shifteddata signal 336 dH from phase shifter 324 dH and in-phase signal 346 dHfrom quadrature generation block 344 d, and provides modulatedhorizontally-polarized signal 348 dH to antenna 314 d. In addition, datasignal 334 dV having phase information, amplitude information andencoded data information is provided to phase shifter 324 dV, where datasignal 334 dV may be phase shifted by phase shifter 324 dV to form phaseshifted data signal 336 dV. Phase shifted data signal 336 dV from phaseshifter 324 dV is provided to amplifier 322 dV. Amplifier 322 dVcombines phase shifted data signal 336 dV from phase shifter 324 dV andquadrature signal 346 dV from quadrature generation block 344 d, andprovides modulated vertically-polarized signal 348 dV to antenna 314 d.In one implementation, antenna 314 d may combine modulatedhorizontally-polarized signal 348 dH and modulated vertically-polarizedsignal 348 dV, and generate a modulated circularly-polarized signal fortransmission, where angular speed modulation signal 342 d controls anangular speed of the modulated circularly-polarized signal. In oneimplementation, data signals 334 dH and 334 dV may carry the same datafrom the master chip; while in another implementation data carried bydata signal 334 dH can be different from data carried by data signals334 dV.

In one implementation, oscillator 340 a may be a voltage controlledoscillator. In one implementation, amplifiers 322 aH, 322 aV, 322 dH and322 dV may each be a power amplifier. In another implementation,amplifiers 322 aH, 322 aV, 322 dH and 322 dV may each be a variable gainamplifier. In one implementation, oscillator 340 a in transmit circuit320 a and oscillator 340 d in transmit circuit 320 d may respectivelyprovide angular speed modulation signals 342 a and 342 d, which may havedifferent angular speed modulation frequencies, such that the respectivemodulated circularly-polarized signals transmitted by antennas 314 a and314 d may have different angular speeds. In another implementation,oscillator 340 a in transmit circuit 320 a and oscillator 340 d intransmit circuit 320 d may respectively provide angular speed modulationsignals 342 a and 342 d, which may have the same angular speedmodulation frequency. It should be noted that although only transmitcircuits such as transmit circuits 320 a and 320 d are shown in RF frontend chip 306 a, RF front end chip 306 a may also include receivecircuits (not explicitly shown in FIG. 3) for receiving signals from oneor more antennas and providing the received signals to the master chip.

FIG. 4 illustrates a functional circuit diagram of a portion of anexemplary wireless transceiver according to one implementation of thepresent application. As shown in FIG. 4, RF front end chip 406 aincludes transmit circuit 420 a coupled to antenna 414 a. In oneimplementation, RF front end chip 406 a may substantially correspond toRF front end chip 106 a in FIG. 1B. In one implementation, RF front endchip 406 a may substantially correspond to RF front end chip 206 a inFIG. 2. In one implementation, RF front end chip 406 a may substantiallycorrespond to RF front end chip 306 a in FIG. 3. It is noted that, inFIG. 4, some antennas and their corresponding transmit circuits areomitted from RF front end chip 406 a for conceptual clarity. Also, RFfront end chip 406 a may also include receive circuits for receivingsignals from one or more antennas. The receive circuits are omitted fromRF front end chip 406 a for conceptual clarity.

As shown in FIG. 4, RF front end chip 406 a receives data signals fromN-bit bus 410 a from a master chip, such as master chip 180 in FIG. 1Bor master chip 280 in FIG. 2. N-bit bus 410 a carrying data signalshaving phase information, amplitude information and encoded datainformation, for example, from the master chip is provided to transmitcircuit 420 a. Transmit circuit 420 a includes phase shifters 424 aH and424 aV, amplifiers 422 aH and 422 aV, oscillator 440 a and quadraturegeneration block 444 a.

As shown in FIG. 4, data signal 430 aH is provided to phase shifter 424aH, where data signal 430 aH may be phase shifted by phase shifter 424aH to generate phase shifted data signal 432 aH. In the presentimplementation, phase shifted data signal 432 aH carries the term,sin(ω_(C)t), where ω_(C) is the carrier frequency of a modulatedcircularly-polarized signal to be transmitted by antenna 414 a. Phaseshifted data signal 432 aH from phase shifter 424 aH is provided toamplifier 422 aH. In addition, oscillator 440 a provides angular speedmodulation signal 442 a to quadrature generation block 444 a. In thepresent implementation, angular speed modulation signal 442 a carriesthe term, sin(ω_(AS)t), where ω_(AS) is the angular speed modulationfrequency that controls the angular speed of the modulatedcircularly-polarized signal to be transmitted by antenna 414 a. Asillustrated in FIG. 4, quadrature generation block 444 a generatesin-phase signal 446 aH and quadrature signal 446 aV based on angularspeed modulation signal 442 a, where in-phase signal 446 aH includes theterm, sin(ω_(AS)t), while quadrature signal 446 aV includes the term,cos(ω_(AS)), which in-phase signal 446 aH and quadrature signal 446 aVare 90-degree out of phase with each other.

As illustrated in FIG. 4, amplifier 422 a 11 combines phase shifted datasignal 432 aH having the term, sin(ω_(C)t), from phase shifter 424 aHand in-phase signal 446 aH having the term, sin(ω_(AS)t), fromquadrature generation block 444 a, and provides modulatedhorizontally-polarized signal 448 aH to antenna 414 a. In oneimplementation, modulated horizontally-polarized signal 448 aH mayinclude the term, sin(ω_(AS)t), sin(ω_(C)t).

In addition, data signal 430 aV having phase information, amplitudeinformation and encoded data information is provided to phase shifter424 aV, where data signal 430 aV may be phase shifted by phase shifter424 aV to form phase shifted data signal 432 aV. In the presentimplementation, phase shifted data signal 432 aV also carries the term,sin(ω_(C)), where ω_(C) is the carrier frequency of the modulatedcircularly-polarized signal to be transmitted by antenna 414 a. Phaseshifted data signal 432 aV from phase shifter 424 aV is provided toamplifier 422 aV.

It should be noted that, in contrast to a conventional transmit circuitwhere a horizontal-polarization path and a vertical-polarization pathreceive an in-phase signal and a quadrature signal, respectively, from aprocessing unit, in transmit circuit 420 a, N-bit bus 410 a provides asignal, for example, having the term, sin(ω_(C)t) to both thehorizontal-polarization path and the vertical-polarization path. Thus,phase shifted data signal 432 aH in the horizontal-polarization path andphase shifted data signal 432 aV in the vertical-polarization path bothcarry the term, sin(ω_(C)t), which is provided from the master chip, forexample.

As illustrated in FIG. 4, quadrature generation block 444 a generatesin-phase signal 446 aH and quadrature signal 446 aV based on angularspeed modulation signal 442 a, and provides quadrature signal 446 aVhaving the term, cos(ω_(AS)t), to amplifier 422 aV. Amplifier 422 aVcombines phase shifted data signal 432 aV having the term, sin(ω_(C)t),from phase shifter 424 aV and quadrature signal 446 aV having the term,cos(ω_(AS)t), from quadrature generation block 444 a, and providesmodulated vertically-polarized signal 448 aV to antenna 414 a. In oneimplementation, modulated vertically-polarized signal 448 aV may includethe term, cos(ω_(AS)t)·sin(ω_(C)t). In one implementation, amplifiers422 aH and 422 aV may each be a power amplifier. In anotherimplementation, amplifiers 422 aH and 422 aV may each be a variable gainamplifier.

In one implementation, modulated horizontally-polarized signal 448 aHand modulated vertically-polarized signal 448 aV are combined to form amodulated circularly-polarized signal, which may be transmitted byantenna 414 a. In one implementation, modulated horizontally-polarizedsignal 448 aH and modulated vertically-polarized signal 448 aV may becombined in antenna 414 a. In another implementation, modulatedhorizontally-polarized signal 448 aH and modulated vertically-polarizedsignal 448 aV may be combined in RF front end chip 406 a before beingsent to antenna 414 a. In one implementation, the modulatedcircularly-polarized signal may be a right-handed modulatedcircularly-polarized signal or a left-handed modulatedcircularly-polarized signal. In one implementation, data signals 430 aHand 430 aV may carry the same data from the master chip; while inanother implementation data carried by data signal 430 aH can bedifferent from data carried by data signals 430 aV.

In the present implementation, angular speed modulation signal 442 agenerated by oscillator 440 a controls the angular speed of themodulated circularly-polarized signal. In one implementation, oscillator440 a is a voltage controlled oscillator. In one implementation,oscillator 440 a is configured to vary the angular speed of themodulated circularly-polarized signal to be transmitted by antenna 414a. By controlling the angular speed using oscillator 440 a andquadrature generation block 444 a, transmit circuit 420 a can encodedata signal 430 aH and/or 430 aV with angular speed modulation signal442 a, which may provide additional information, such as securityinformation or encryption information in the modulatedcircularly-polarized signal. As such, only a wireless receiver withknowledge of the modulated circularly-polarized signal with modulatedangular speed may receive and decode information from the modulatedcircularly-polarized signal.

From the above description, it is manifest that various techniques canbe used for implementing the concepts described in the presentapplication without departing from the scope of those concepts.Moreover, while the concepts have been described with specific referenceto certain implementations, a person of ordinary skill in the art wouldrecognize that changes can be made in form and detail without departingfrom the scope of those concepts. As such, the described implementationsare to be considered in all respects as illustrative and notrestrictive. It should also be understood that the present applicationis not limited to the particular implementations described above, butmany rearrangements, modifications, and substitutions are possiblewithout departing from the scope of the present disclosure.

1-20. (canceled)
 21. A wireless transmitter using a phased array antennapanel for transmitting wireless signals comprising: a plurality of radiofrequency (RF) front end chips each coupled to a group of antennas; atleast one of said RF front end chips receiving a data signal from amaster chip, and being configured to combine said data signal with anangular speed modulation signal to provide a modulatedhorizontally-polarized signal and a modulated vertically-polarizedsignal; a modulated circularly-polarized signal that is generated basedon said modulated horizontally-polarized signal and said modulatedvertically-polarized signal for transmission by at least one antenna insaid group of antennas.
 22. The wireless transmitter of claim 21 whereinsaid angular speed modulation signal controls an angular speed of saidmodulated circularly-polarized signal.
 23. The wireless transmitter ofclaim 21 wherein said at least one of said RF front end chips comprisesan oscillator providing said angular speed modulation signal to aquadrature generation block.
 24. The wireless transmitter of claim 23wherein said quadrature generation block provides an in-phase signal anda quadrature signal based on said angular speed modulation signal. 25.The wireless transmitter of claim 21 wherein said at least one of saidRF front end chips comprises a first amplifier receiving an in-phasesignal and said data signal, and providing said modulatedhorizontally-polarized signal to said at least one antenna in said groupof antennas.
 26. The wireless transmitter of claim 25 wherein said RFfront end chip comprises a second amplifier receiving a quadraturesignal and said data signal, and providing said modulatedvertically-polarized signal to said at least one antenna in said groupof antennas.
 27. The wireless transmitter of claim 21 wherein said datasignal is encoded by said angular speed modulation signal.
 28. Thewireless transmitter of claim 21 wherein said angular speed modulationsignal controls an angular speed of said modulated circularly-polarizedsignal.
 29. The wireless transmitter of claim 21 wherein said RF frontend chip comprises an oscillator configured to vary said angular speedof said modulated circularly-polarized signal.
 30. The wirelesstransmitter of claim 29 wherein said oscillator is a voltage controlledoscillator.
 31. The wireless transmitter of claim 21 wherein saidmodulated circularly-polarized signal is a right-handed modulatedcircularly-polarized signal or a left-handed modulatedcircularly-polarized signal.
 32. The wireless transmitter of claim 21wherein said master chip is integrated in said phased array antennapanel.
 33. A wireless transmitter using a phased array antenna panel fortransmitting wireless signals comprising: a radio frequency (RF) frontend chip coupled to an antenna in said phased array antenna panel; saidRF front end chip comprising an oscillator providing an angular speedmodulation signal to a quadrature generation block; said RF front endchip receiving a data signal from a master chip, and being configured tocombine said data signal with said angular speed modulation signal toprovide a modulated polarized signal for transmission by said antenna insaid phased array antenna panel.
 34. The wireless transmitter of claim33 wherein said quadrature generation block provides an in-phase signaland a quadrature signal based on said angular speed modulation signal.35. The wireless transmitter of claim 33 wherein said data signal isencoded by said angular speed modulation signal.
 36. The wirelesstransmitter of claim 33 wherein said angular speed modulation signalcontrols an angular speed of said modulated polarized signal.
 37. Thewireless transmitter of claim 33 wherein said oscillator is a voltagecontrolled oscillator.
 38. The wireless transmitter of claim 33 whereinsaid modulated polarized signal is a right-handed modulatedcircularly-polarized signal or a left-handed modulatedcircularly-polarized signal.
 39. The wireless transmitter of claim 33wherein said master chip is integrated in said phased array antennapanel.